I shot a wedding today. And I would pretty much guarantee that I walk at least a mile every time I photograph a wedding. I have no actual proof or data to back up this assumption, besides my exhaustion and tired muscles the next day.
Oh, and your quote for the day:
Thinking is generally thought of as doing nothing in a production-oriented culture, and doing nothing is hard to do. It's best done by disguising it as doing something, and the something closest to doing nothing is walking. Walking itself is the intentional act closest to the unwilled rhythms of the body, to breathing and the beating of the heart. It strikes a delicate balance between working and idling, being and doing. It is a bodily labor that produces nothing but thoughts, experiences, arrivals (from Wanderlust).